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Ronan O'Dowd

Associate Professor

Tel: +353 1 7161930
Email: ronan.odowd@ucd.ie

Biography



Ronan O'Dowd PhD SMIEEE is Professor Emeritus Photonic Engineering at UCD Dublin, Ireland where he taught and researched Optoelectronics and Photonics for three decades until 2010. He has several breakthrough papers in topics such as tunable semiconductor lasers and optical communications, including the millennium 2001 paper proving a dense comb of 2000 wavelength channels could be transmitted in a single fibre using the same semiconductor laser (ref IEEE Jnl.S.T. Quantum Electronics Mar 2001)). Many of his students have proceeded to successful careers in academia and the photonics industry worldwide. He has several PCT and USA patents in semiconductor lasers.


Ronan O'Dowd PhD SMIEEE has published in spring 2012 first editions of two new textbooks for engineering and physical sciences, both available in print handbook form at Amazon and www.Lulu.com

 ISBN 978-1-4716-6455-7 and ISBN  978-1-4716-6456-4

More Details

Photonics Handbook Part 2: LEDs, Lasers, Detectors By Ronan O'Dowd

Paperback: £9.90

Dispatched in 3¿5 business days

Electronic engineering and physics handbook of photonic devices

Photonics Handbook Part 1: Broadband Optical Fibres By Ronan O'Dowd

Paperback: £9.90

Dispatched in 3 to 5 business days

Broadband communications by optical fibre delivery exceeds all other methods. We describe using simple light rays and then full wave theory how to design and manufacture the ultimate cable. Worked...  examples and index given.

--------------------------------------------------------------------------------------------------------------------------------------By the same author:

Physics Science of Action        Gill and Macmillan 1984

He is a Senior member IEEE. Heads well established research group into semiconductor lasers and amplifiers, planar lightwave circuits and optical communications systems. Vice-chair European project COST-239 from 1994-1999 (Ultra-broadband Optical Networks). Member Management Committee of European COST-240, -266, and ¿267. He has over 80 international publications (IEEE, IEE etc.) with one textbook. Five world-wide patents (semiconductor lasers). European RACE, ACTS and IST participant (EU-BLISS, EU-ACTUAL and EU STOLAS projects) during 1995-2004 researching tunable lasers for dense wavelength division multiplexing (DWDM) and IP wavelength-labelling in optical networks. Reviewer for IEEE Journal Quantum Electronics, IEEE Journal Lightwave Technology, IEEE Photonics Technology Letters. He founded Tsunami Photonics in 1999 and holds international patents in semiconductor lasers for tunable broadband communications: US 6,807,204 B1 and PCT/IB00/01476 Oct 16 2000. 
Sample IEEE journal paper:
 

O'Dowd Ronan Senior Member IEEE; Sean O'Duill; Gavin Mulvihill; Neal O'Gorman; Yonglin Yu. ; (2001) 'Frequency Plan and Wavelength Switching Limits for Widely Tunable Semiconductor Transmitters '.  IEEE Journal of Selected Topics in Quantum Electronics , 7 (2):259-269, March 2001
 

Optical fibre forms the backbone of mobile, metropolitan, inter-city and trans-oceanic networks underlying the world-wide web. How does this work?

Broadband Laser Tutorial (1 hour+) by Professor Ronan O'Dowd is on youtube at:          http://youtu.be/jVFpKg0_OhU

Also MPEG4 video TUTORIAL "Broadband Optical Fibre; How it Works" is on youtube at:          http://www.youtube.com/watch?v=PJ9Y7cHBuCc

This is 1 hr long and explains design and manufacture of step-index, graded index and monomode fibre for exploiting the full bandwidth of the 200 THz laser transmitters.

The relevant text is at Amazon.com  and Lulu.com

Photonics Handbook Parts 1+2

Fibre Optic Systems by Ronan O'Dowd

 ISBN 978-1-4716-8650-4

 

Professional

         

Conference Contributions

Gavin Mulvihill, Yonglin Yu, Sean ODuill, Ronan ODowd ; Thermal Contribution to Wavelength Switching Characteristics of Widely Tunable Lasers . [N/A], European Conference Optical Communications ECOC 2003, Tunable Laser Workshop, Turin, Sep 2003. , Turin .
Ronan ODowd (INVITED) ; Switching Technology for Optical Networks . [N/A], IEE/IEEE Conference MIDAS (Microwave Integrated Design and Simulation) July 2003 University Surrey, UK , University Surrey, UK .
Yonglin Yu, Ronan ODowd SMIEEE ; Timing Control Implications for Widely Tunable Lasers in Stacked Optical Labelling . [N/A], IEEE-LEOS Conference, Glasgow, November 2002 Session: Optical Packets and Labels , Glasgow .
Yu Yonglin (Student Member IEEE), Ronan O'Dowd (Senior Member IEEE). ; Fast Wavelength switching of a High Speed Laser for Dynemic Wavelength Routing. [N/A], IEEE LEOS Conference 2000, Paper WV3, Puerto Rico, USA, Nov 2000, Puerto Rico, USA .
Morthier1 G.,G.Sarlet, R.Baets, R.O'Dowd, G.Mulvihill, H.Ishii3, Y.Yoshikuni. (1 Univ. Gent, 2 UCD, 3 NTT). ; The Direct Modulation Bandwidth of Widely Tunable DBR Laser Diodes: Results from the ACTS project AC329-ACTUAL. [N/A], International Semiconductor Laser Conference, Monteray, CAL, USA, Sep.2000. , Monteray, CAL, USA .
Gavin Mulvihill, Yonglin Yu, Sean ODuill, Ronan ODowd ; (2003) Thermal Contribution to Wavelength Switching Characteristics of Widely Tunable Lasers . [N/A], IEEE LEOS Conference,paper WT4, Tucson, Arizona,, Tucson, Arizona , 02-AUG-03.
K. Vlachos1, J.G.L. Jennen1, Yonglin Yu2 and R. ODowd2 1:Bell Laboratories, Lucent Technologies, The Netherlands 2: Optoelectronics Research Centre, University College Dublin, Ireland ; (2003) Optical FSK transmitter using widely tunable GCSR lasers. [N/A], Conference on Lasers and Electro-Optics, CLEO 2003 CLEO/Europe-EQEC 2003, 23-27 June 2003, Munich, Germany Paper CC1T , Munich , 23-JUN-03 - 27-JUN-03.
O. Lavrova, N. OGorman, R. ODowd, U. ORaghallaigh, ; (2002) CLose-GridTM to calibrate widely tuneable lasers. [N/A], ECLW/ECOC European Semiconductor Laser Workshop, Copenhagen, Sep 6/7 2002, Copenhagen , 06-SEP-02 - 07-SEP-02.
O'Dowd Ronan.; (2001) .Wavelength Agility and DWDM Channel Density Limits with Widely Tunable Semiconductor Transmitters. [Invited Lecture], Optical Networking Design and Modelling Conference (Kluwer Publications) ONDM-2001 Vienna, Austria, 5-7 February 2001. http://www.ikn.tuwien.ac.at/ondm , Vienna, Austria , 05-FEB-01 - 07-FEB-01.
O'Duill Sean (Student Member IEEE), Gavin Mulvihill, Neal O'Gorman, Ronan O'Dowd (Senior Member IEEE). ; (2000) Electronic Control of a Four-Section Laser for 2000 Ultra-Dense WDM Channels at 2000 MHz Spacing. . [N/A], IEEE LEOS Conference, Paper TuCC 3, Puerto Rico, USA, 13-16 Nov 2000. , Puerto Rico, USA , 13-NOV-00 - 16-NOV-00.
Buus Jens, Geert Morthier, Gert Sarlet, Bjorn Broberg, J.P. Rigole, Gavin Mulvihill, Ronan O'Dowd. ; (2000) Application and Control of Widely Tunable Lasers in HD WDM Networks. . [N/A], SPIE Annual Conference, San Diego, USA, 30 July - 4 Aug. 2000, San Diego, USA , 30-JUL-00 - 04-AUG-00.
J. Dunne, R. O'Dowd, T. Farrell.; (1999) Complete Wavelength Control of a GCSR Laser Over EDFA Band. [N/A], IEEE Lasers and Electro-Optics Conference LEOS'99, San Francisco,8-11 Nov. 1999. , San Francisco , 08-NOV-99 - 11-NOV-99.
T. Mullane, T. Farrell, J .Dunne, Y. Yonglin, R. O'Dowd, ; (1999) Ultrafast measurements of a SG-DBR laser with picosecond time and nanometre wavelength Resolution Using a Fabry-Perot Interferometer. [N/A], IEEE Lasers and Electro-Optics Conference LEOS'99, San Francisco,8-11 Nov. 1999. , San Francisco , 08-NOV-99 - 11-NOV-99.
J.Dunne, T.Farrell, R.O'Dowd,; (1999) Fast Generation of Optimum Operating Points for Tunable SG-DBR Lasers Over 1535-1565 nm Range. [N/A], IEEE Conference on Lasers and ElectroOptics-CLEO'99, Baltimore, MD, USA, 23-28 May, 1999. , Baltimore, MD, USA , 23-MAY-99 - 28-MAY-99.
J.Dunne,T.Mullane,T.Farrell,R.O'Dowd,; (1999) Bridging the Gap: Transmitter Module Specification to Network Performance Models. [N/A], Optical Network Design and Modelling-ONDM'99, Paris, Feb8-9, 1999. , Paris , 08-FEB-99 - 09-FEB-99.
               

Publications

     

Peer Reviewed Journals

Seán Ó Dúill, Ronan F. O'Dowd (Senior Member IEEE), Gadi Eisenstein (Fellow IEEE); (2009) 'On the Role of High Order Coherent Population Oscillations in Slow and Fast Light Propagation Using Semiconductor Optical Amplifiers'. IEEE Jnl Selected Topics on Quantum Electronics (Special Issue Semiconductor Lasers) Jun 2009, . [Details]
John A. Ging, Ronan O'Dowd; (2007) 'Numerical analysis of a swift, high resolution Generic Lightwave Integrated Chip wavelength monitor'. Optical and Quantum Electronics, . [Details]
John A.Ging, Ronan O'Dowd; (2006) 'Numerical analysis of a swift, high resolution wavelenght monitordesigned as Generic Lightwave Integrated Chip (GLIC)'. Numerical Simulation of Optoelectronic Devices, . [Details]
Yonglin Yu, Gavin Mulvihill, Sean ODuill,Ronan ODowd ; (2004) 'Performance implications of wideband lasers for FSK modulation labeling scheme '. IEEE Photonics Technology Letters, 16 (1):39-41. [Details]
Kyriak Vlachos, Jianfeng Zhang, Jan Cheyns, Sulur, Nan Chi, Erik van Breusegem, Idelfonso Tafur, Jean Jennen, Christophe Peucheret, Ronan O'Dowd, Ton Koonen 1:Bell Laboratories, Lucent Technologies, The Netherlands 2: Optoelectronics Research Centre, University College Dublin, Ireland 3: IMEC University Gent, Belgium 4: COM Tech. Univ. Denmark ; (2003) 'An Optical FSK/IM coding technique for the implementation of a label controled, AWG-based Optical Packet Router '. IEEE Journal of Lightwave Technology, 21 (11):2617-2628. [Details]
Gavin Mulvihill, Ronan ODowd ; (2002) 'Actual speed limitations of wavelength switching for optical networks. '. Spie, 4876 . [Details]
Yonglin Yu, Student Member IEEE, Ronan ODowd, Senior Member IEEE ; (2002) 'Interpretation of Wavelength Switching Effects of Widely Tunable Lasers '. IEEE Photonics Technology Letters, . [Details]
Yonglin Yu, Ronan ODowd SMIEEE ; (2002) 'Influence of Mode Competition on the Fast Wavelength Switching of an SG-DBR Laser '. IEEE Journal of Lightwave Technology, 20 (4):700-704. [Details]
Yonglin Yu, Student Member IEEE, Ronan ODowd, Senior Member IEEE ; (2002) 'Interpretation of Wavelength Switching Effects of Widely Tunable Lasers '. IEEE Photonics Technology Letters, . [Details]
Yonglin Yu, Ronan ODowd SMIEEE ; (2002) 'Influence of Mode Competition on the Fast Wavelength Switching of an SG-DBR Laser '. IEEE Journal of Lightwave Technology, 20 (4):700-704. [Details]
O'Dowd Ronan Senior Member IEEE; Sean O'Duill; Gavin Mulvihill; Neal O'Gorman; Yonglin Yu. ; (2001) 'Frequency Plan and Wavelength Switching Limits for Widely Tunable Semiconductor Transmitters '. IEEE Journal of Selected Topics in Quantum Electronics, 7 (2):259-269. [Details]
O'Dowd Ronan, Sean O'Duill, Neal O'Gorman, Gavin Mulvihill ; (2001) 'Network Access to 2000 WDM Channels at 2 GHz Granularity with a Single Laser in C-band '. Photonic Network Communications, 3 (4):377-382. [Details]
Yu Yonglin; Ronan O'Dowd ; (2001) 'Influence of Mode Competition on the fast Wavelength Switching of a SG-DBR Laser. '. Optical and Quantum Electronics, 33 (6):641-652. [Details]
O'Dowd Ronan Senior Member IEEE; Sean O'Duill; Gavin Mulvihill; Neal O'Gorman; Yonglin Yu. ; (2001) 'Frequency Plan and Wavelength Switching Limits for Widely Tunable Semiconductor Transmitters '. IEEE Journal of Selected Topics in Quantum Electronics, 7 (2):259-269. [Details]
O'Dowd Ronan. ; (2000) 'Tunable and Agile Laser Transmitter Developments for Future DWDM Optical Networks: Towards Managed Control and Switching. [INVITED PAPER]. www.wkap.nl/issuetoc.htm/1387-974X+2+1+2000 '. Photonic Network Communications, 2 (1):95-101. [Details]

Other Journals

Mulvihill, G., O'Dowd, R.; (2005) 'Thermal Transient Measurement, Modeling and Compensation of a Widely Tunable Laser for an Optically Switched Network'' IEEE Jnl. Lightwave Technology 23 (12) :4101-4109. [Details]
Ronan O'Dowd, Yonglin Yu, Gavin Mulvihill, Sean O'Duill, Geert Morthier, Bart Moeyersoon ; (2005) 'Transmitters for two-tier optical data-packet labeling in advanced IP networks' IEE Proc. Optoelectronics, Special Issue Optoelectronic Devices . [Details]
Gavin Mulvihill, Ronan O'Dowd ; (2005) 'Frequency Drift Issues in Tunable Lasers for Optically Routed and FSK Labeled Networks' International Conference on Quantum Electronics 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005 (IQEC/CLEO-PR 2005) July 11-15 at Toshi Center . [Details]

Conference Publications

Seán Ó Dúill, Ronan O'Dowd; (2007) Coherent Interference of Four-wave Mixing Products Created by Multiple Strong Pumps in a Semiconductor Optical Amplifier European Semiconductor Laser Workshop [Details]
Seán Ó Dúill, Ronan O'Dowd; (2007) Estimation of the Slowdown Factor due to Coherent Population Oscillations Created by Dual Pumps in a Semiconductor Optical Amplifier European Semiconductor Laser Workshop [Details]
O'Dowd, R., Ou, H., Rottwitt, K.; (2006) A Generic Lightwave Integrated Chip (GLIC) for fast, high resolution wavelength monitoring Optoelectronics Research Centre Technical University Denmark, [Details]
Ging, J.A., O'Dowd, R.; (2006) A Novel Finite Element Method for the modelling of multiple reflections in Photonic Integrated Circuits SPIE Photonics Europe Strasbourg, [Details]
Sean O Duill, Ronan O'Dowd; (2004) Four Wave Mixing of Closely Spaced Channels in a Semiconductor Optical Amplifier Quantum Electronics and Photonics; Photon04 QEP-16 Conf Glasgow, Scotland, [Details]
Ging, J., Larkin, A., O'Dowd, R.; (2005) A Generic Lightwave Integrated Chip (GLIC) for fast, high resolution wavelength monitoring Optoelectronics Research Centre University College Dublin, Ireland, [Details]
Sean O'Duill, Ronan O'Dowd; (2004) Characterization and utilization of solid-state widely tunable semiconductor lasers for frequency shift keying communication systems systems European Semiconductor Lasers Workshop 2004 Saro, Gothenburg. Sweden, [Details]
John Ging, Ronan O'Dowd; (2005) A Practical Numerical Theory for light propagation in Erbium-Doped Waveguide Amplifiers Proceedings SPIE: The International Society for Optical Engineering [Details]
Ronan O'Dowd ; (2003) Switching Technology for Optical Networks IEE/IEEE Conference MIDAS (Microwave Integrated Design and Simulation) University Surrey, UK, [Details]
K. Vlachos, J.G.L. Jennen, Yonglin Yu and R. O'Dowd; (2003) Optical FSK transmitter using widely tunable GCSR lasers Conference on Lasers and Electro-Optics [Details]
Yonglin Yu, Ronan O'Dowd ; (2002) Timing Control Implications for Widely Tunable Lasers in Stacked Optical Labelling IEEE-LEOS Conference [Details]
Gavin Mulvihill, Ronan O'Dowd; (2002) Actual speed limitations of wavelength switching for optical networks SPIE [Details]
John Ging, R. F. O'Dowd ; (2002) Finding Ge-Al doped fibre parameters for modelling Erbium-Doped Fibre Amplifier operation SPIE [Details]
Fionan Mc Grath, Ronan O'Dowd; (2002) Simulated fibre-grating filters for optical networks from C-band to L-band SPIE [Details]
Yonglin Yu, Ronan O'Dowd ; (2002) Influence of Mode Competition on the Fast Wavelength Switching of an SG-DBR Laser IEEE Jnl. Lightwave Technology [Details]
Yonglin Yu, Ronan O'Dowd; (2002) Interpretation of Wavelength Switching Effects of Widely Tunable Lasers IEEE Photonics Technology Letters Nov 2002 [Details]
O.Lavrova, N. O'Gorman, R. O'Dowd, U. O'Raghallaigh; (2002) CLose-GridTM to calibrate widely tuneable lasers European Semiconductor Laser Workshop [Details]
Gavin Mulvihill, Yonglin Yu, Sean O'Duill, Ronan O'Dowd; (2003) Thermal Contribution to Wavelength Switching Characteristics of Widely Tunable Lasers IEEE LEOS Conference Tucson, Arizona, [Details]
Gavin Mulvihill, Ronan O'Dowd; (2005) FM Response of a Tunable Laser Incorporating Thermal Effects Proceedings SPIE: The International Society for Optical Engineering [Details]
Kenneth Jackson, Ronan O'Dowd; (2005) Investigation of Optical Integrated Circuit Functionality by Transfer Matrix Method Modelling Proceedings SPIE: The International Society for Optical Engineering [Details]
Mulvihill, G. and O'Dowd, R.; (2006) Frequency Drift Issues in Tunable Lasers for Optically Routed and FSK Labeled Networks International Conference on Quantum Electronics 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005 (IQEC/CLEO-PR 2005) Toshi Center Kaikan, Tokyo, Japan, , 11-JUL-05 - 15-JUL-05 [Details]
Ronan O'Dowd; (2004) Automated PXI-based Screening and Characterisation of Tunable Lasers IEEE Lightwave Technology in Instrumentation and Measurement Conference IBM Centre Pallisades, New York, USA, , 19-OCT-04 - 20-OCT-04 [Details]
Fadi Daou, Ronan O'Dowd; (2004) Optical Transponder Test for Multi Gigabit Rate IEEE Lightwave Technology in Instrumentation and Measurement Conference IBM Centre Pallisades, New York, USA, , 19-OCT-04 - 20-OCT-04 [Details]
                                                                                         

Research

Research Interests

The development and modelling of semiconductor lasers for optical fibre communications.